VRSF G01 X3 M40i / G02 X4 M40i B58 Downpipe | 2018-2022

The VRSF 4.5-inch downpipe replaces the factory downpipe on the B58-powered G01 X3 M40i and G02 X4 M40i. Choose a catless race version or a 200-cell high-flow catted version, in brushed stainless or with a heat shield wrap.

What It Does

The factory downpipe holds a restrictive converter right after the turbo. Replacing it lowers back pressure, so the turbo spools faster and the SUV pulls harder, with VRSF citing 25 to 30 hp with a tune. The exhaust note also becomes fuller. The catted version keeps a high-flow converter for a more moderate sound.

Materials and Construction

The downpipe is a full 4.5 inches, hand crafted and TIG welded from 304 stainless steel with smooth radius bends. A CNC-machined 304 stainless flange gives a smooth transition from the turbo to the mid pipe. It fits the stock cat-back and aftermarket cat-backs, in left- and right-hand-drive vehicles.

Features

• Full 4.5in 304 stainless steel design
• Catless race or 200-cell high-flow catted
• Brushed finish or heat shield wrap
• CNC 304 stainless turbo flange
• Fits stock and aftermarket cat-backs
• 25-30 hp with a tune (VRSF figures)

What Is Included

• VRSF B58 X3 M40i / X4 M40i downpipe in the type and finish you choose

Required Parts

• An engine tune is needed to run either version without fault codes.

Specs

• Part numbers: 10582060 (race brushed), 10582068 (race heat shield), 10582061 (catted brushed), 10582061-HS (catted heat shield)
• Brand: VRSF
• Material: 304 stainless steel, TIG-welded
• Pipe diameter: 4.5 in
• Catalyst: none (race) or 200-cell high flow (catted)
• Shipping dimensions: 26 x 12 x 6 in (66 x 30 x 15 cm) for the race versions; 26 x 10 x 6 in (66 x 25 x 15 cm) for the catted versions
• Shipping weight: 8 lb (3.6 kg) for the race versions; 17 lb (7.7 kg) for the catted versions

Fitment Notes

• Lifetime warranty on the race downpipe; 2-year warranty on the catted version.
• Will not fit vehicles with a gasoline particulate filter (OPF/GPF).
• Not for the X3 M or X4 M (S58), which use the VRSF S58 downpipes.
• Race downpipes remove the catalytic converters and are sold for off-road and competition use only. A tune is needed to run them without fault codes.